This year, America has frozen, fires are raging all over the world, wars are going on and volcanoes are erupting, all this can speak of the end of the world, Jehovah's Witnesses say. Believe them or not, everyone decides, but to prepare for such events will not be superfluous. So, one author decided to close up a knife to fight off enemies, get food and build huts. He made a knife for automobile springs, homemade You can not only cut, but also chop thick branches or even sharpen logs. Spring steel lends itself perfectly to hardening, and although it cannot be sharpened to the state of a razor, steel will cope perfectly with the functions of a brutal knife. So if you are still interested in the project, I propose to study it in more detail!
Materials and tools used by the author:
Material List:
- car spring;
- a tree for overlays;
- epoxy adhesive;
- brass rods for pins;
- oil for wood.
Tool List:
- blacksmith furnace and forging tools;
- grinding stones;
- a pencil;
- grinder;
- brush and grinding nozzles for grinders;
- tape cutting machine;
- drilling machine.
The process of making a knife:
Step one. Source material preparation
The source material is the automobile spring, for a start it needs to be leveled. To do this, steel must either be annealed, or it can be leveled directly to hot. After that, draw the profile of the blade that you want to get on the plate, and you can start cutting. For cutting, the author used a grinder. Of course, the spring steel is quite thick and cutting with a grinder can be quite a tedious task, but in general the task is quite feasible.
Step Two Forging
The author made easy forging of the blade, thanks to forging the steel will become more durable and it will be better suited for the manufacture of a knife. By forging it is possible to form slopes, as a result, much less force will be required for grinding work. Also, if desired, you can form a decorative pattern with a hammer with a rounded tip. After forging, we normalize the steel and leave to cool.
Step Three Coarse grinding
After forging, we eliminate all sins by grinding, here we need a grinder with grinding nozzles. As for the decorative pattern, it can be treated with a brush nozzle.
Step Four Quenching
We temper steel so that the blade is strong and the blade does not blunt for a long time. We heat the blade to a non-magnetic state and immerse it in water, but it is better to use oil. If hardening is successful, the blade will begin to ring, and the metal will not be taken with a file. The author did not release steel, but it is advisable to do so so that the steel is not brittle.
Step Five Cleaning and polishing
After hardening, we clean the blade from scale, then a brush nozzle on the grinder or drill will help us. Then you can polish the slopes to a mirror state.
Step Six Handle
We assemble the handle for the knife, cut the lining out of wood or use boards of suitable thickness. We drill holes for the pins and glue the pads on the handle using epoxy glue. At the end, we attach the desired profile of the handle using a grinder with a petal nozzle and carefully grind it with an emery cloth. To emphasize the beauty of wood and protect it from water, we impregnate the tree with oil.
Seventh step. Sharpening
Sharpen the knife, if the steel is well hardened and suitable in quality, it can be sharpened to a razor condition. For sharpening, the author uses a variety of whetstones with different grit. So that the stones are sharpened well, they need to be watered. The final sharpening of the knife was made with a stone with a grit of 8000.
That's all, the knives are ready, their author made two at once. Such a hatchet knife perfectly cuts wood due to its large mass and strength. This is the end of the project, I hope you liked the homemade work, and you found useful thoughts for yourself. Good luck and creative inspiration, if you decide to repeat this. Do not forget to share your ideas and homemade things with us!
